Key expansion modules for D7xx & D8xx phones | BLF · Speed-Dial | 18–48 Keys | 3 Years Warranty
Some desks simply need more keys than a phone can hold — a receptionist watching thirty extensions, an operator routing calls, a dispatcher juggling teams. That's exactly what a Snom expansion module is for. It clips onto the side of a compatible phone, powers itself over USB, and gives you rows of programmable keys for speed-dial and busy lamp field (BLF) monitoring — no new phone, no new licence.
D7xx Modules (D7, D7 White, D7C) — add 18 LED keys or a 6.8" colour touch-label display to the D7xx business series, daisy-chainable for a big console.
D8xx Modules (D8C, D8C White) — the 6.8" colour expansion module built for the D8xx executive series, matching its premium look.
Picking an expansion module comes down to which phone it sits beside. The D7 and D7C pair with the D7xx business series, while the D8C is made for the D8xx executive range. Below you can jump to a group, compare them at a glance, or browse all 5 modules.
| Module | For phone series | Display | Keys | Connection |
|---|---|---|---|---|
| Snom D7 / D7 (White) | D7xx Business | LED key labels | 18 physical keys · up to 54 (3 daisy-chained) | USB powered |
| Snom D7C | D7xx Business | 6.8" TFT colour | 16 physical / up to 48 virtual | USB powered |
| Snom D8C / D8C (White) | D8xx Executive | 6.8" TFT colour | 16 physical / up to 48 virtual | USB powered |
These modules bolt straight onto the side of a D7xx phone and draw power over USB — nothing else to plug in. The classic D7 gives you 18 coloured-LED keys and daisy-chains up to three deep for as many as 54 extra keys, perfect for a busy reception. Prefer a screen over printed labels? The D7C swaps in a 6.8" colour display with self-updating smart labels, so key assignments change on-screen instead of on paper.
18 multicolour LED keys for D7xx series phones. Daisy-chain up to three for 54 keys.
18 multicolour LED key expansion module — white housing to match lighter workspaces.
6.8" TFT colour screen with 16 physical and up to 48 virtual keys for D7xx phones.
When the phone at the desk is a premium D8xx, the D8C is the module made to sit beside it. The same 6.8" colour display and 48-key capacity, styled to match the executive range so the whole setup looks intentional rather than bolted-on. Available in black or a white housing to suit the room, it gives executives, PAs and operators the extra one-touch reach they need without cluttering the desk.
Whichever module you choose, the everyday benefits are the same — more reach, less scrolling, a tidier desk.
Put your most-called contacts and departments a single press away — no menus, no searching.
See at a glance who's free, ringing or on a call, and transfer or pick up with one touch.
Attaches to the side of the phone and powers over USB — no separate adapter or wiring.
Daisy-chain or page through keys to grow from a few contacts to a full operator console.
The first question is always which phone the module will live next to, because that decides the family. If your desk runs a D7xx business phone, you're choosing between the classic D7 and the colour D7C. The D7 is the workhorse — 18 physical keys with coloured LEDs, and the ability to daisy-chain up to three modules for as many as 54 keys, which is exactly what a busy switchboard or reception needs. The D7C answers a different preference: instead of printed paper labels it uses a 6.8" colour screen with smart labels that update themselves, so reassigning keys never means re-printing a strip.
For a D8xx executive phone, the D8C is the natural companion. It brings the same 6.8" colour display and generous key capacity, but is finished to match the premium D8xx aesthetic so the pairing looks deliberate on the desk. Both the D7 and D8C come in white as well as the standard housing, which matters more than it sounds — in a bright, design-led reception, a mismatched black sidecar stands out for the wrong reasons.
Expansion modules are where a standard SIP phone quietly becomes a proper console — the difference between hunting for an extension and simply glancing at a lit key. Because they're part of the wider Snom ecosystem, they work within the same platform your phones already run on, whether that's Grandstream UCM, Asterisk, 3CX, Yeastar or Epygi. As an authorized Snom distributor in India, Cohesive Technologies helps you spec the right module and quantity for each role — reception, operator, dispatch or executive PA — with TEC certified inventory, competitive pricing and nationwide delivery, plus support across Sri Lanka, Nepal and the Maldives.
Authorized distributor · TEC certified · Best price in India · Free consultation · Nationwide delivery
